In the eyes of outsiders, the Wang family is a model happy family, with a harmonious husband and wife and four daughters with their own characteristics. But they don't know that there is a turbulent undercurrent behind it: the two couples are at odds with each other, and the youngest daughter Ziling is jealous of her three sisters.
Moreover, behind the false feelings, the Wang family has a taboo that must not be mentioned...
Intention: Anyone who wants to get something for nothing will achieve nothing